next-upgrade

To upgrade Next.js safely, identify your current version in package.json and follow official migration guides to apply codemods and update dependencies incrementally across major versions. This minimizes breaking changes by validating the build and dev workflows after each step.

The best way to plan a Next.js migration is to determine an incremental upgrade path through major versions. By fetching official Next.js upgrade guides and codemods, you can update dependencies step-by-step from one major version to the next while validating compatibility.

Codemods automate code transformations during a Next.js upgrade to fix breaking changes. They are fetched from official upgrade guides and applied to your project to ensure compatibility before you update dependencies and validate the build and dev workflows.

You can upgrade Next.js from 13 to 15, but planning an incremental upgrade path through intermediate major versions like 14 is safer. This approach applies official codemods and validates the build at each step to minimize breaking changes.

A Next.js build may fail after an upgrade due to breaking changes from unresolved dependency updates or missing codemods. To fix this, follow the official migration guides to apply necessary codemods, update key dependencies, and validate the dev and build workflows.

Yes, you need to update key dependencies identified in package.json when upgrading Next.js. Applying official codemods and updating dependencies together ensures compatibility and validates the build and dev workflows during the major version migration.